Jesse C Christensen1, David L Quammen2, Justin H Rigby3, Cory L Christiansen4, Jennifer E Stevens-Lapsley5. 1. Veterans Affairs Salt Lake City Health Care System, University of Utah, Department of Physical Therapy and Athletic Training, Salt Lake City, UT, United States of America; University of Utah, Department of Physical Therapy and Athletic Training, Salt Lake City, UT, United States of America. Electronic address: jesse.christensen@hsc.utah.edu. 2. University of Utah, Department of Physical Therapy and Athletic Training, Salt Lake City, UT, United States of America. Electronic address: david.quammen@hsc.utah.edu. 3. University of Utah, Department of Physical Therapy and Athletic Training, Salt Lake City, UT, United States of America. Electronic address: justin.rigby@health.utah.edu. 4. University of Colorado School of Medicine, Department of Physical Medicine and Rehabilitation, VA Eastern Colorado Geriatric Research Education and Clinical Center, Aurora, CO, United States of America; VA Eastern Colorado Geriatric Research Education and Clinical Center, Aurora, CO, United States of America. Electronic address: cory.christiansen@cuanschutz.edu. 5. University of Colorado School of Medicine, Department of Physical Medicine and Rehabilitation, VA Eastern Colorado Geriatric Research Education and Clinical Center, Aurora, CO, United States of America; VA Eastern Colorado Geriatric Research Education and Clinical Center, Aurora, CO, United States of America. Electronic address: jennifer.stevens-lapsley@cuanschutz.edu.
Abstract
BACKGROUND: Trunk movement compensation characterized as ipsilateral trunk lean and posterior rotation with respect to pelvis during stance phase of walking is common in people with hip osteoarthritis and a biomarker of deficits in physical function in older adults. However, the relationship between trunk movement compensation on deficits in physical performance, muscle strength and functional capacity is unknown. METHODS: A cross-sectional study design was used. Two inertial measurement units were used to assess trunk movement compensation during the six-minute-walk-test. Knee extension, knee flexion and hip abduction strength were measured using hand-held dynamometer. Multivariate regression models, controlling for self-reported hip pain, were used to regress trunk movement compensation onto six-minute-walk-test and muscle strength measures. Pairwise t-tests were used to evaluate the difference trunk movement compensation has on functional capacity by comparing the first and last minute of the six-minute-walk-test. FINDINGS: Thirty-five participants (63.3 ± 7.4 years, 57% male, 28.6 ± 4.5 kg/m2) were enrolled. Greater trunk movement compensation was related to poorer six-minute-walk-test (p = 0.03; r = -0.46). Greater hip abduction weakness was related to increased trunk movement compensation in both the sagittal (p = 0.05; r = -0.44) and frontal (p = 0.04; r = -0.38) planes. Participants demonstrated greater frontal plane trunk movement compensation during the last minute compared to the first minute of the six-minute-walk-test (p < 0.01). INTERPRETATION: Trunk movement compensation, identified by inertial measure units, is a clinically relevant measure and has a moderate-to-strong relationship on deficits in physical performance, muscle strength and functional capacity. Inertial measurement units can be used as a practical means of measuring movement quality in the clinical setting. Published by Elsevier Ltd.
BACKGROUND: Trunk movement compensation characterized as ipsilateral trunk lean and posterior rotation with respect to pelvis during stance phase of walking is common in people with hip osteoarthritis and a biomarker of deficits in physical function in older adults. However, the relationship between trunk movement compensation on deficits in physical performance, muscle strength and functional capacity is unknown. METHODS: A cross-sectional study design was used. Two inertial measurement units were used to assess trunk movement compensation during the six-minute-walk-test. Knee extension, knee flexion and hip abduction strength were measured using hand-held dynamometer. Multivariate regression models, controlling for self-reported hip pain, were used to regress trunk movement compensation onto six-minute-walk-test and muscle strength measures. Pairwise t-tests were used to evaluate the difference trunk movement compensation has on functional capacity by comparing the first and last minute of the six-minute-walk-test. FINDINGS: Thirty-five participants (63.3 ± 7.4 years, 57% male, 28.6 ± 4.5 kg/m2) were enrolled. Greater trunk movement compensation was related to poorer six-minute-walk-test (p = 0.03; r = -0.46). Greater hip abduction weakness was related to increased trunk movement compensation in both the sagittal (p = 0.05; r = -0.44) and frontal (p = 0.04; r = -0.38) planes. Participants demonstrated greater frontal plane trunk movement compensation during the last minute compared to the first minute of the six-minute-walk-test (p < 0.01). INTERPRETATION: Trunk movement compensation, identified by inertial measure units, is a clinically relevant measure and has a moderate-to-strong relationship on deficits in physical performance, muscle strength and functional capacity. Inertial measurement units can be used as a practical means of measuring movement quality in the clinical setting. Published by Elsevier Ltd.
Entities:
Keywords:
Hip osteoarthritis; Inertial measurement units; Muscle strength; Six-minute walk test; Trunk movement compensation
Authors: Virginia Klausmeier; Vipul Lugade; Brian A Jewett; Dennis K Collis; Li-Shan Chou Journal: Clin Orthop Relat Res Date: 2009-09-10 Impact factor: 4.176